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Shell Programming and Scripting
Source functions from variable
Post 302996647 by Don Cragun on Saturday 29th of April 2017 03:23:18 AM
04-29-2017
Quote:
We all know that we can do some things in shell code a few different ways (or a few thousand different ways) depending on what we are trying to do. (And we know that you haven't told us what you are trying to do other than define functions that have been read from a file into a variable.)
The only thing I see here that is impossible is for us to accurately guess at why you think you have to use this method to define functions and what you are going to do with those functions after you define them.
If you would share with us what you are trying to do instead of telling us how you want to implement a small piece of what you want to do, we might be able to help you find a solution to your problem.
P.S. Did you know that some shells can export functions in addition to exporting variables?
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT CENTOS
chsh
CHSH(1) User Commands CHSH(1) NAME
chsh - change your login shell SYNOPSIS
chsh [-s shell] [-l] [-u] [-v] [username] DESCRIPTION
chsh is used to change your login shell. If a shell is not given on the command line, chsh prompts for one. chsh is used to change local entries only. Use ypchsh, lchsh or any other implementation for non-local entries. OPTIONS
-s, --shell shell Specify your login shell. -l, --list-shells Print the list of shells listed in /etc/shells and exit. -u, --help Print a usage message and exit. -v, --version Print version information and exit. VALID SHELLS
chsh will accept the full pathname of any executable file on the system. However, it will issue a warning if the shell is not listed in the /etc/shells file. On the other hand, it can also be configured such that it will only accept shells listed in this file, unless you are root. EXIT STATUS
Returns 0 if operation was successful, 1 if operation failed or command syntax was not valid. SEE ALSO
login(1), passwd(5), shells(5) AUTHOR
Salvatore Valente <svalente@mit.edu> AVAILABILITY
The chsh command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/. util-linux July 2009 CHSH(1)